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https://issues.apache.org/jira/browse/HDFS-15404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-15404:
------------------------------
    Fix Version/s: 3.1.5
                   3.4.0
                   3.3.1
                   2.10.1
                   3.2.2
       Resolution: Fixed
           Status: Resolved  (was: Patch Available)

> ShellCommandFencer should expose info about source
> --------------------------------------------------
>
>                 Key: HDFS-15404
>                 URL: https://issues.apache.org/jira/browse/HDFS-15404
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>            Priority: Major
>             Fix For: 3.2.2, 2.10.1, 3.3.1, 3.4.0, 3.1.5
>
>         Attachments: HDFS-15404.001.patch, HDFS-15404.002.patch, 
> HDFS-15404.003.patch, HDFS-15404.004.patch, HDFS-15404.005.patch, 
> HDFS-15404.006.patch
>
>
> Currently the HA fencing logic in ShellCommandFencer exposes environment 
> variable about only the fencing target. i.e. the $target_* variables as 
> mentioned in this [document 
> page|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html]).
>  
> But here only the fencing target variables are getting exposed. Sometimes it 
> is useful to expose info about the fencing source node. One use case is would 
> allow source and target node to identify themselves separately and run 
> different commands/scripts.



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